Dp PP Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Slit Septum Cap, 1000/Pk
Whatman SKU: US503NPUDPP

Polypropylene (PP) Syringeless Filters - US503NPUDPP

Across UniPrep, Mini-UniPrep, and Autovial formats, syringeless filters integrate filtration into one disposable, so analysts clarify a sample without assembling and changing filters between runs. Hydrophobic polypropylene suits solvent and non-aqueous sample streams and delivers nominal retention with high dirt-loading capacity. The PP housing prevents sample bypass under rated operating pressure while holding extractables low for sensitive analyses and maintains a low-dead-volume internal flow path. Where high-throughput HPLC and UHPLC demand consistent injections, that uniformity keeps method performance predictable.

Technical Specifications

• Hydrophobic matrix suits solvent and non-aqueous sample streams
• High resistance to organic solvents, acids, and bases
• Sustains throughput on particulate-laden solvent samples
• Low binding with nominal depth retention and high dirt-loading capacity
• Low extractables protect sensitive downstream analyses

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Optimized internal geometry minimizes backpressure in service
• Reliable housing-to-membrane seal prevents bypass at rated pressure

Holding a leak-free seal through every needle puncture keeps your injections clean from the first to the last. Dependable vial and closure performance protects your samples through every injection so evaporation and contamination stay out of your data. Reach out to the Tisch Scientific team for volume pricing and technical support on your chromatography consumables.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Construction

Polypropylene (PP)

Material

Polypropylene (PP)

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophobic

• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• Direct Sample Filtration - Built-in membrane clarifies the sample in one manual step, cutting transfer steps before chromatographic injection.
• High-Throughput Prep - Disposable single-unit format speeds batch sample preparation by eliminating syringe assembly and cleanup between samples.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.